So get rid of the comment in 90crypt/check.
Also do a bit of trivial bashification.
# if cryptsetup is not installed, then we cannot support encrypted devices.
which cryptsetup >/dev/null 2>&1 || exit 1
-
-[ "$1" = "-d" ] && echo dm
-
-# hostonly checking should only return true if root is on a LUKS device
-# in some way, but I am too lazy to figure out how to do that.
-# Instead, fail if we do not have a LUKS device in use somewhere.
+[[ $1 = -d ]] && echo dm
. $dracutfunctions